diff --git a/index.html b/index.html
index e9c8f629562b229d80f6217fc3f986173179a3c3..ec5ea862835c8ff6deea146edb219f12fcabda1f 100644
--- a/index.html
+++ b/index.html
@@ -34,7 +34,7 @@
 }
 
 body {
-	font: 1em/1.6 system, Tahoma, sans-serif;
+	font: 1em/1.6 system-ui, Tahoma, sans-serif;
 	margin: 3em auto;
 	max-width: 40em;
 }